Chandra-Mangala Yoga is formed by the association of Chandra, the Moon, with Mangala, Mars, whether by conjunction or by mutual aspect. It is read for enterprise, earning capacity and material acquisition, and is counted among the wealth-producing combinations, though the classical descriptions are ambivalent: the same pairing of the Moon with Mars is read elsewhere for a hard or restless temperament and for a certain ruthlessness in the pursuit of gain. That ambivalence is characteristic and worth noticing. Jyotisha handbooks frequently give both a favourable and an unfavourable reading of the same configuration, and the resolution is expected to come from the rest of the chart, from the dignity of the planets involved and from the dasha periods in which the combination becomes active.
The same Moon-Mars pairing is read quite differently depending on which houses it occupies: in the second or the eleventh, the houses of accumulated resources and of gains, the combination leans toward its favourable, earning reading, while in the sixth, eighth or twelfth houses of difficulty the same conjunction is generally read toward its harsher, conflict-prone side, so the ambivalence the classical texts note is not simply a matter of temperament but is tied to structural house placement as much as to the pairing itself. Brihat Jataka, the classical source most often cited for combinations of this kind alongside Brihat Parashara Hora Shastra, treats the Moon and Mars together as a configuration whose result swings unusually widely with context, which later commentators take as a caution against reading any two-planet yoga in isolation from the houses it falls in.